Access running summary data

Makace · February 21st, 2010, 05:13 PM

I have a serial data based on Date (per day) Mon to Fri. Its easy to derive an average for the whole data but I want a running average of the past twenty days, ten days etc
Grateful for your help on how to do this
Thanks
Makace

mmcdonal · March 2nd, 2010, 03:08 PM

Do you mean like "SELECT * FROM MyData WHERE Date BETWEEN etc?" or select top 20? How are you displaying this data (form or report?) What events are triggering the view?

Do you have sample table columns and a query that works?

Makace · March 2nd, 2010, 03:53 PM

mmcdonal,
Below is sample data for my query. I want to display a running display of the latest 20, 10, 5, days (records) of the Dhigh and DLow in either a report or query that is grouped from top down (if possible display in vertical graphic pattern)

Thanks for your help
Makace

Day DHigh DLow
Thur 1.41 1.40
Fri 1.42 1.41
Mon 1.42 1.42
Tue 1.42 1.40
Wed 1.41 1.40
Thur 1.41 1.39
Fri 1.40 1.39
Mon 1.39 1.39
Tue 1.40 1.39
Wed 1.40 1.39
Thur 1.39 1.37
Fri 1.37 1.36
Mon 1.37 1.36
Tue 1.38 1.37
Wed 1.38 1.37
Thur 1.38 1.36
Fri 1.37 1.35
Mon 1.36 1.36
Tue 1.38 1.36
Wed 1.38 1.36
Thur 1.37 1.35
Fri 1.36 1.35
Mon 1.37 1.36
Tue 1.37 1.35
Wed 1.36 1.35
Thur 1.36 1.35
Fri 1.37 1.35
Mon 1.37 1.35

mmcdonal · March 3rd, 2010, 08:34 AM

Hi again,

I created a table like this:

Table1
DataID = PK
DayWeek = Text
DHigh = Single
DLow = Single

Is that what you are working with? If so, I created this query to display the data for the last 5 days. I assumed that the records are created in order since there are no Date fields in your data. Therefore, I am using the PK to sort the data, like this:

Code:

SELECT TOP 5 Table1.DataID, Table1.DayWeek, Table1.DHigh, Table1.DLow
FROM Table1
ORDER BY Table1.DataID DESC;

So this data:

Table1
DataID DayWeekDHigh DLow
1 Mon 1.1 1
2 Tues 2.1 1.1
3 Weds 3.1 2.2
4 Thurs 2.5 1.8
5 Fri 2 1.75
6 Mon 2 1.4
7 Weds 1.8 1.2
8 Thurs 1.8 1.2
9 Fri 1.9 1.1

yields these results:

DataID DayWeek DHigh DLow
9 Fri 1.9 1.1
8 Thurs 1.8 1.2
7 Weds 1.8 1.2
6 Mon 2 1.4
5 Fri 2 1.75

Does that work for you? If there were dates associated with these days, the results would be more reliable.

Makace · March 3rd, 2010, 09:48 AM

Hi mmcdonal'
Thanks for trying to help with my query. I have dates for the data, see below. What I want to achieve is a report or query in 'access' which selects the latest 20 or 10 etc days of the combined DHigh and DLow and arrange them in one column of descending order. Please note there are 3 colums - Date, DHigh, DLow eg the first line has date 01-Feb-10, DHigh 1.3939, DLow 1.3853

Thank you

Makace

Date DHigh DLow
01-Feb-10 1.3939 1.3853
02-Feb-10 1.3975 1.3886
03-Feb-10 1.4026 1.3886
04-Feb-10 1.3903 1.3713
05-Feb-10 1.3746 1.3585
08-Feb-10 1.3714 1.3621
09-Feb-10 1.3840 1.3650
10-Feb-10 1.3813 1.3676
11-Feb-10 1.3801 1.3595
12-Feb-10 1.3689 1.3532
15-Feb-10 1.3634 1.3578
16-Feb-10 1.3777 1.3588
17-Feb-10 1.3789 1.3586
18-Feb-10 1.3655 1.3498
19-Feb-10 1.3608 1.3454
22-Feb-10 1.3654 1.3573
23-Feb-10 1.3692 1.3497
24-Feb-10 1.3626 1.3502
25-Feb-10 1.3571 1.3451
26-Feb-10 1.3683 1.3535
01-Mar-10 1.3654 1.3461
02-Mar-10 1.3622 1.3435

mmcdonal · March 3rd, 2010, 01:28 PM

I would create the query to select top 20, or 10 etc, ordered by date DESC, and then use that query to build a report ordered by date Asc. Does that help?

Makace · March 3rd, 2010, 01:38 PM

Hi again,
That sounds fine - till I see the result!
Makace